Associations between light exposure and sleep timing and sleepiness while awake in a sample of UK adults in everyday life

A Didikoglu, N Mohammadian… - Proceedings of the …, 2023 - National Acad Sciences
Experimental and interventional studies show that light can regulate sleep timing and
sleepiness while awake by setting the phase of circadian rhythms and supporting alertness …

The lower correlated color temperature with higher illuminance nocturnal light environment improves cognitive performance and sleep quality

J Nie, Q Zou, L Chen, Z Chen, Q Hu, F Jiao, Z Pan… - Building and …, 2024 - Elsevier
Well-designed nocturnal light environment could boost performance on the cognitive tasks
and promote sleep quality after light exposure. We optimized and fabricated a four-channel …

[HTML][HTML] Seasonal Variation in the Responsiveness of the Melanopsin System to Evening Light: Why We Should Report Season When Collecting Data in Human …

I Schöllhorn, O Stefani, C Blume, C Cajochen - Clocks & Sleep, 2023 - mdpi.com
It is well known that variations in light exposure during the day affect light sensitivity in the
evening. More daylight reduces sensitivity, and less daylight increases it. On average days …

[HTML][HTML] Effects of daytime exposure to short-wavelength-enriched white light on alertness and cognitive function among moderately sleep-restricted university …

MA Siraji, LK Grant, A Schaefer, S Haque… - Building and …, 2024 - Elsevier
We examined the impact of an 8-h exposure to short-wavelength-enriched white light during
the day on the cognitive performance, alertness, and mood of moderately sleep-restricted …

The effect of reducing blue light from smartphone screen on subjective quality of sleep among students

P Randjelović, N Stojanović, I Ilić… - Chronobiology …, 2023 - Taylor & Francis
The exposure of humans to artificial light at night (ALAN) with predominant blue part of the
visible spectrum is strongly influencing circadian rhythm and sleep through melanopsin …

[HTML][HTML] Impact of repeated morning bright white light exposures on attention in a simulated office environment

M Canazei, M Dick, W Pohl, J Weninger, N Hubel… - Scientific Reports, 2023 - nature.com
Attention is essential to the work. This study investigated the effects of two different light
pulses on a simple attention task. In addition, the effects of subsequent exposure to constant …

[HTML][HTML] Melanopic irradiance defines the impact of evening display light on sleep latency, melatonin and alertness

I Schöllhorn, O Stefani, RJ Lucas, M Spitschan… - Communications …, 2023 - nature.com
Evening light-emitting visual displays may disrupt sleep, suppress melatonin and increase
alertness. Here, we control melanopic irradiance independent of display luminance and …

Melanopic metrics: Advancing the characterization of everyday light patterns

TL Sletten - Proceedings of the National Academy of …, 2023 - National Acad Sciences
Much of our physiology and behavior follow circadian rhythms, endogenously driven
rhythms that deviate slightly from 24 h. Daily patterns of ocular light exposure are important …

Effects of evening smartphone use on sleep and declarative memory consolidation in male adolescents and young adults

C Höhn, MA Hahn, G Gruber, B Pletzer… - Brain …, 2024 - academic.oup.com
Exposure to short-wavelength light before bedtime is known to disrupt nocturnal melatonin
secretion and can impair subsequent sleep. However, while it has been demonstrated that …

Evening prolonged relatively low melanopic equivalent daylight illuminance light exposure increases arousal before and during sleep without altering sleep structure

M He, H Chen, S Li, T Ru, Q Chen… - Journal of Sleep …, 2023 - Wiley Online Library
Light can influence many psychophysiological functions beyond vision, including alertness,
circadian rhythm, and sleep, namely the non‐image forming (NIF) effects of light. Melanopic …